Transonic buffet in the finite span Benchmark Supercritical Wing (BSCW)

Singh, M and Pradeepa, TK and Venkatraman, K (2022) Transonic buffet in the finite span Benchmark Supercritical Wing (BSCW). In: AIAA AVIATION 2022 Forum, 27 June - 1 July 2022, Chicago.

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Abstract

Transonic buffet is caused by shock oscillations that are triggered by shock induced boundary layer separation. We study this phenomenon in the context of the Benchmark SuperCritical Wing (BSCW) at a Mach number of 0.85 and a chord based Reynolds number of cec = 4.491 × 106 . The aspect ratio of the wing is 2. The flow over the wing is shown to have a significant span-wise component giving rise to span-wise wing-tip to root flow that shows a distinctive travelling wave behavior. However, the shock buffet motion estimated at two span-wise stations, namely 10% and 60% span show the same frequency and amplitude despite flow separation being significantly strong closer to the root.

Item Type:	Conference Paper
Publication:	AIAA AVIATION 2022 Forum
Publisher:	American Institute of Aeronautics and Astronautics Inc, AIAA
Additional Information:	The copyright for this article belongs to the American Institute of Aeronautics and Astronautics Inc, AIAA.
Keywords:	Aspect ratio; Aviation; Boundary layers; Motion estimation; Reynolds number; Wings, Aspect-ratio; Boundary-layer separation; Chord-based Reynolds number; Shock induced; Shock oscillations; Supercritical; Transonic buffet; Travelling waves; Wave behavior; Wing tips, Flow separation
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	23 Aug 2022 05:56
Last Modified:	23 Aug 2022 05:56
URI:	https://eprints.iisc.ac.in/id/eprint/76184

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